BY JUSTIN RAY September 5, 2000 -- Follow the countdown and launch of the Proton rocket launching the Sirius 2 spacecraft for Sirius Satellite Radio. Reload this page for the very latest on the mission.				Flight data file Vehicle: Proton/Block DM Payload: Sirius 2 Launch date: Sept. 5, 2000 Launch window: 0943:58 GMT (5:43:58 a.m. EDT) Launch site: LC 81, Pad 23, Baikonur Cosmodrome, Kazakhstan Pre-launch briefing Launch timeline - Chart with times and descriptions of events to occur during the launch. Proton - Description of the Russian-made rocket used in this launch. Sirius - Learn more about the Sirius Satellite Radio system, the spacecraft and orbits. Video vault The Russian-built Proton rocket blasts off on Sept. 5 carrying the second Sirius Radio satellite.   PLAY (434k, 49sec QuickTime file) Watch the planned sequence of events as the Proton rocket carries the Sirius 2 digital radio broadcasting satellite into orbit.   PLAY (718k, 1min 41sec QuickTime file) The International Launch Services Proton rocket lifts off with the Sirius 1 satellite from Kazakhstan in June.   PLAY (236k, 27sec QuickTime file) The Proton's spent first stage is jettisoned just over two minutes into the flight as the second stage engines ignited in June.   PLAY (172k, 18sec QuickTime file) Download QuickTime 4 software to view this file.